| CAS No. | 4477-28-5 |
| Molecular Formula | C12H22N3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
CATO manufactures 4-Aminodiphenylamine diazonium sulfate 4-Diazodiphenylamine sulfate 4477-28-5 Azoic Diazo Component 22 Azoic Diazo No. 22 MFCD00011895 Variamine Blue RT salt under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
4-Aminodiphenylamine diazonium sulfate 4-Diazodiphenylamine sulfate 4477-28-5 Azoic Diazo Component 22 Azoic Diazo No. 22 MFCD00011895 Variamine Blue RT salt (CAS 4477-28-5), molecular formula C12H22N3HO4S and molecular weight 305.39 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Aminodiphenylamine diazonium sulfate 4-Diazodiphenylamine sulfate 4477-28-5 Azoic Diazo Component 22 Azoic Diazo No. 22 MFCD00011895 Variamine Blue RT salt (C12H22N3HO4S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 305.39 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
| Molecular Formula | C12H22N3 HO4S |
| Molecular Weight | 305.39 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |